///////    Twomain.java    ///////

class Average1
{  
   public static void main(String[] args)
   {   int i = 11, j = 20;
       double a = (i + j)/2.0;
       System.out.println("i is " + i
         + " and j is " + j);
       System.out.println("average is " + a);
   }
}

class Twomain
{
   public static void main(String[] args)
   {   Average.main(args);
   }
}